|
For a soil to have a pH of 7.6 while being very low in the major cations is odd. Which method of measuring pH did you use? (Those pH wands aren't very reliable. I normally use a Helige-Truog kit, or "pHydrion" papers.) A "sodic" soil would test very high in exchangeable sodium; and in any case, these are usually found in arid areas (although there are a few in Louisiana). What is the geographic setting of this soil? Is it in an area that is reclaimed from tidal marsh? Sometimes such soils will have high pH in situ, but after drying, will exhibit pH values down around 2.8. I'm in my office today until about 2:30 or so...if you'd like to discuss this in detail, send me a private e-mail to eddie.earles@md.usda.gov, and I'll send you my phone number. Eddie Earles
-----Original Message----- |
Archive powered by MHonArc 2.6.24.